#
# A Makefile for the scst-local ...
#

SHELL=/bin/bash

KMOD 		:= $(shell pwd)/kernel

enable-Wextra = $(shell uname_r="$$(uname -r)"; if [ "$${uname_r%.el5}" = "$${uname_r}" ]; then echo "$(1)"; fi)

EXTRA_CFLAGS	+= -I$(SCST_INC_DIR)
EXTRA_CFLAGS	+= $(call enable-Wextra,-Wextra -Wno-unused-parameter\
	-Wno-missing-field-initializers)

#EXTRA_CFLAGS += -DCONFIG_SCST_LOCAL_DIRECT_PROCESSING

EXTRA_CFLAGS += -DCONFIG_SCST_EXTRACHECKS

#EXTRA_CFLAGS += -DCONFIG_SCST_TRACING

EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions

ifneq ($(PATCHLEVEL),)
obj-m	:= scst_local.o
else
######### BEGIN OUT-OF-TREE RULES #########

ifndef PREFIX
        PREFIX=/usr/local
endif

ifeq ($(KVER),)
  ifeq ($(KDIR),)
    KVER := $(shell uname -r)
    KDIR := /lib/modules/$(KVER)/build
  else
    KVER := $(strip $(shell						\
	cat $(KDIR)/include/config/kernel.release 2>/dev/null ||	\
	make -s -C $(KDIR) kernelversion))
  endif
else
  KDIR := /lib/modules/$(KVER)/build
endif

ifeq ($(INSTALL_MOD_PATH),)
  export INSTALL_MOD_PATH := $(DESTDIR)
endif

INSTALL_DIR := $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/extra

SCST_INC_DIR := $(shell if [ -e "$$PWD/../scst" ];			\
			then echo "$$PWD/../scst/include";		\
			else echo "$(DESTDIR)$(PREFIX)/include/scst"; fi)
SCST_DIR := $(shell if [ -e "$$PWD/../scst" ];				\
		    then echo "$$PWD/../scst/src";			\
		    else echo "$(DESTDIR)$(PREFIX)/include/scst"; fi)

all: Modules.symvers Module.symvers
	$(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd) BUILD_INI=m \
		SCST_INC_DIR=$(SCST_INC_DIR)

install: all
	$(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd) BUILD_INI=m \
		$$([ -n "$(DESTDIR)$(INSTALL_MOD_PATH)" ] && echo DEPMOD=true) \
		SCST_INC_DIR=$(SCST_INC_DIR) modules_install

SCST_MOD_VERS := $(shell ls $(SCST_DIR)/Modules.symvers 2>/dev/null)
ifneq ($(SCST_MOD_VERS),)
Modules.symvers: $(SCST_DIR)/Modules.symvers
	cp $(SCST_DIR)/Modules.symvers .
else
.PHONY: Modules.symvers
endif

# It's renamed in 2.6.18
SCST_MOD_VERS := $(shell ls $(SCST_DIR)/Module.symvers 2>/dev/null)
ifneq ($(SCST_MOD_VERS),)
Module.symvers: $(SCST_DIR)/Module.symvers
	cp $(SCST_DIR)/Module.symvers .
else
.PHONY: Module.symvers
endif

uninstall:
	rm -f $(INSTALL_DIR)/scst_local.ko
	-/sbin/depmod -b $(INSTALL_MOD_PATH)/ -a $(KVER)

########## END OUT-OF-TREE RULES ##########
endif

clean:
	@$(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd) clean
	@$(RM) tags Modules.symvers module.symvers Module.markers modules.order

extraclean: clean
	rm -f *.orig *.rej

2release:
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS" Makefile >/dev/null
	sed -i.aa s/"^#\?EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ Makefile
	grep "^EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING" Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions" Makefile >/dev/null
	rm Makefile.aa

2debug:
	sed -i.aa s/"^#\?EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ Makefile
	grep "^EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS" Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING" Makefile >/dev/null
	sed -i.aa s/"^#\?EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ Makefile
	grep "^EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions" Makefile >/dev/null
	rm Makefile.aa

2perf:
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS"/ Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_EXTRACHECKS" Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING"/ Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_TRACING" Makefile >/dev/null
	sed -i.aa s/"^E\?XTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/"#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions"/ Makefile
	grep "^#EXTRA_CFLAGS += \-DCONFIG_SCST_DEBUG -g -fno-inline -fno-inline-functions" Makefile >/dev/null
	rm Makefile.aa

release-archive:
	../scripts/generate-release-archive scst_local "$$(sed -n 's/^#define[[:blank:]]SCST_LOCAL_VERSION[[:blank:]]*\"\([^\"]*\)\".*/\1/p' scst_local.c)"

.PHONY: all tgt install uninstall clean extraclean 2release 2debug 2perf

